| Before the white settlers arrived, two groups of Indian tribes lived in the region that is now Montana. The Arapaho, Assiniboine, Atsina, Blackfeet, Cheyenne, and Crow tribes lived on the plains. The mountains in the west were the home of the Bannack, Flathead, Kalispell, Kootenai, and Shoshone tribes. Other nearby tribes (such as the Sioux, Mandan, and Nez Perce) hunted in the Montana region | | Before the white settlers arrived, two groups of Indian tribes lived in the region that is now Montana. The Arapaho, Assiniboine, Atsina, Blackfeet, Cheyenne, and Crow tribes lived on the plains. The mountains in the west were the home of the Bannack, Flathead, Kalispell, Kootenai, and Shoshone tribes. Other nearby tribes (such as the Sioux, Mandan, and Nez Perce) hunted in the Montana region |